Cold-Climate Air Source Heat Pumps
High-efficiency technologies like air source heat pumps (ASHPs) have significant potential to improve space-heating efficiency and reduce energy costs for houses in cold climates. ASHP technology has been available for many years, but until ...
When Robert Johnson, director of community development for the Southern California city of Irvine, attended an HVAC conference in 1995, he was appalled to discover how poorly designed and poorly installed many residential duct systems were. [continue reading]
"Sick building syndrome" is caused by everything from dangerous molds to meteorological occurrences. Improving the indoor air quality of these buildings calls for careful diagnostics and even more careful removal of and repairs to problem areas. [continue reading]
A colorless, odorless, flavorless, nonirritating gas, carbon monoxide (CO) causes more poisoning deaths today than any other substance. [continue reading]
Window inlet vents are an alternate way to provide fresh air using an exhaust fan. When the fan is on, it slightly depressurizes the house, causing makeup air to enter through the window vents with minimal heat loss. [continue reading]
Wall insulation clearly saves heating energy, but does it save cooling energy as well? [continue reading]
Do homes with vented attics use less cooling energy than homes with unvented, conditioned attics in hot climates? With little formal research available to answer the question, common wisdom and most building codes have favored venting. [continue reading]
Seventy million American homes and businesses burn natural gas, oil, or propane on-site to heat their space and water, generating 560 ...
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